ScienceDaily Nanotechnology hírei

Tartalom átvétel ScienceDaily: Nanotechnology News
Nanotechnology news. From nanoscience to nanotechnology applications such as nanotechnology in medicine, read the latest news from leading research institutes.
Frissítve: 10 év 17 hét

DNA introduced directly into cell nucleus using protein nanodisks

sze, 01/12/2011 - 11:00
Researchers have discovered a novel gene therapy method using particles measuring only a few nanometers which encapsulate genetic material and introduce themselves directly into the cell nucleus. The nanodisks, as researchers have named the particles, travel rapidly to the interior of the cell until reaching the nucleus, thus increasing the efficiency of the gene transfer process.

New 'frozen smoke' material: One ounce could carpet three football fields

sze, 01/12/2011 - 06:00
Scientists are reporting the development of a new, ultra-light form of "frozen smoke" -- renowned as the world's lightest solid material -- with amazing strength and an incredibly large surface area. The new so-called "multiwalled carbon nanotube aerogel" could be used in sensors to detect pollutants and toxic substances, chemical reactors, and electronics components.

Graphene grains make atom-thick patchwork 'quilts'

k, 01/11/2011 - 17:00
Artistry from science: researchers have unveiled striking, atomic-resolution details of what graphene "quilts" look like at the boundaries between patches, and have uncovered key insights into graphene's electrical and mechanical properties.

Spinning the unspinnable: Superconducting, energy storing and catalytic yarns based on ancient types of spirals

h, 01/10/2011 - 23:00
Researchers found that by twisting nanotube sheets into various spirals, they absorb greater concentrations of embedded materials, while preserving the flexibility and strength of nanotube fibers.

Debunking solar energy efficiency measurements: Physicist 'recalculates' efficiency paradigm for thin film solar panels

h, 01/10/2011 - 06:00
Solar energy developers have been hopeful that new advances in thin-film solar panels will make the technology more marketable. Now a physicist is putting a lid on some of the current hype surrounding the technology -- and may bring the development of solar energy more down-to-earth.

Direct observation of carbon monoxide binding to metal-porphyrines

h, 01/10/2011 - 06:00
What makes carbon monoxide so toxic is that it blocks the binding site for oxygen in hemoglobin. This very mechanism, if better understood, could be used to implement sensors to warn against carbon monoxide. Physicists have taken an important step by deciphering the mechanisms for binding of gas molecules to iron and cobalt porphyrins.

Friction: Suppression of electronic friction on niobium-films below critical temperature

h, 01/10/2011 - 06:00
Is friction dominated by electrons or by lattice vibrations? A nano-contact experiment shows that on a niobium (Nb) surface friction drops by a factor of three when crossing the superconductivity transition, showing that it has essentially an electronic nature in the metallic state, whereas the phononic contribution dominates in the superconducting state.

Polymer dynamics: Bendy tubes get around

p, 01/07/2011 - 06:00
Biotechnology professors have settled a long-standing controversy in the field of polymer dynamics: The researchers proved once and for all that Odijk was correct in proclaiming that a little flexibility goes a long way for stiff filaments in a solution.

How to soften a diamond

cs, 01/06/2011 - 20:00
After hundreds of years, researchers have managed to decode the atomic mechanism behind diamond grinding.

'Nanoscoops' could spark new generation of electric automobile batteries

sze, 01/05/2011 - 20:00
An entirely new type of nanomaterial could enable the next generation of high-power rechargeable lithium-ion batteries for electric automobiles, as well as batteries for laptop computers, mobile phones, and other portable devices. The new material, dubbed a "nanoscoop" because its shape resembles a cone with a scoop of ice cream on top, can withstand extremely high rates of charge and discharge that would cause conventional electrodes used in today's Li-ion batteries to rapidly deteriorate and fail.

Technique turns computer chip defects into an advantage

szo, 01/01/2011 - 20:00
Physicists have discovered that tiny defects inside a computer chip can be used to tune the properties of key atoms in the chip. The technique involves rearranging the holes left by missing atoms to tune the properties of dopants -- the chemical impurities that give the semiconductors in computer chips their special properties.

Your genome in minutes: New technology could slash sequencing time

p, 12/31/2010 - 08:00
Scientists are developing technology that could ultimately sequence a person's genome in mere minutes, at a fraction of the cost of current commercial techniques.

'Breathalyzers' may be useful for medical diagnostics

sze, 12/29/2010 - 17:00
Researchers have overcome a fundamental obstacle in developing breath-analysis technology to rapidly diagnose patients by detecting chemical compounds called "biomarkers" in a person's respiration in real time.

New chemical-free, anti-bacterial plastic 'skins' inspired by dolphin skin

sze, 12/29/2010 - 17:00
Taking inspiration from animals like dolphins and pilot whales that are known to have anti-fouling skins, researchers are using nanotechnology to create synthetic, chemical-free, anti-bacterial surfaces.

Fast sepsis test can save lives

p, 12/24/2010 - 14:00
Blood poisoning can be fatal. If you suffer from sepsis, you used to have to wait as much as 48 hours for laboratory findings. A new diagnostic platform as big as a credit card will now supply the analysis after as little as an hour. This system is based on nanoparticles that are automatically guided by magnetic forces.

Better control of building blocks for quantum computer

cs, 12/23/2010 - 20:00
Scientists in the Netherlands have succeeded in controlling the building blocks of a future super-fast quantum computer. They are now able to manipulate these building blocks (qubits) with electrical rather than magnetic fields, as has been the common practice up till now. They have also been able to embed these qubits into semiconductor nanowires.

Biomagnification of nanomaterials in simple food chain demonstrated

k, 12/21/2010 - 20:00
Researchers have produced a groundbreaking study of how nanoparticles are able to biomagnify in a simple microbial food chain.

Engineers take plasmon lasers out of deep freeze

k, 12/21/2010 - 20:00
Researchers have developed a new technique that allows plasmon lasers to operate at room temperature, overcoming a major barrier to practical utilization of the technology. Previous plasmon lasers required temperatures as low as minus 450 degrees Fahrenheit to function properly.

Electric current moves magnetic vortices: With the help of neutrons, physicists discover new ways to save data

k, 12/21/2010 - 17:00
One of the requirements to keep trends in computer technology on track -- to be ever faster, smaller, and more energy-efficient -- is faster writing and processing of data. New results could point the way to a solution. Physicists set a lattice of magnetic vortices in a material in motion using electric current almost a million times weaker than in earlier studies.

Strange new twist: Researchers discover Möbius symmetry in metamaterials

k, 12/21/2010 - 14:00
Researchers have discovered Möbius symmetry in metamaterials -- materials engineered from artificial "atoms" and "molecules." This phenomenon, never observed in natural materials, could open new avenues for unique applications in quantum electronics and optics.